Finding the Third Proportional to 539,123,979 and 770,422,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   539,123,979 : 770,422,216.50 = 770,422,216.50 : x
2. Step 2: Convert to fraction form
   539,123,979/770,422,216.50 = 770,422,216.50/x
3. Step 3: Cross multiply
   539,123,979x = 770,422,216.50 × 770,422,216.50
4. Step 4: Simplify right side
   539,123,979x = 593,550,391,676,772,864
5. Step 5: Solve for x
   x = 593,550,391,676,772,864/539,123,979
6. Step 6: Final answer
   x = 1,100,953,425.92