Finding the Third Proportional to 215,493,936,840 and 303,077,804,494.50

Step by Step Solution

1. Step 1: Write the proportion equation
   215,493,936,840 : 303,077,804,494.50 = 303,077,804,494.50 : x
2. Step 2: Convert to fraction form
   215,493,936,840/303,077,804,494.50 = 303,077,804,494.50/x
3. Step 3: Cross multiply
   215,493,936,840x = 303,077,804,494.50 × 303,077,804,494.50
4. Step 4: Simplify right side
   215,493,936,840x = 91,856,155,577,206,368,632,832
5. Step 5: Solve for x
   x = 91,856,155,577,206,368,632,832/215,493,936,840
6. Step 6: Final answer
   x = 426,258,654,531.93