Finding the Third Proportional to 85,688,268 and 130,540,147.50

Step by Step Solution

1. Step 1: Write the proportion equation
   85,688,268 : 130,540,147.50 = 130,540,147.50 : x
2. Step 2: Convert to fraction form
   85,688,268/130,540,147.50 = 130,540,147.50/x
3. Step 3: Cross multiply
   85,688,268x = 130,540,147.50 × 130,540,147.50
4. Step 4: Simplify right side
   85,688,268x = 17,040,730,109,321,756
5. Step 5: Solve for x
   x = 17,040,730,109,321,756/85,688,268
6. Step 6: Final answer
   x = 198,868,882.60