Finding the Third Proportional to 287,105,820.50 and 629,795,947.50

Step by Step Solution

1. Step 1: Write the proportion equation
   287,105,820.50 : 629,795,947.50 = 629,795,947.50 : x
2. Step 2: Convert to fraction form
   287,105,820.50/629,795,947.50 = 629,795,947.50/x
3. Step 3: Cross multiply
   287,105,820.50x = 629,795,947.50 × 629,795,947.50
4. Step 4: Simplify right side
   287,105,820.50x = 396,642,935,487,422,784
5. Step 5: Solve for x
   x = 396,642,935,487,422,784/287,105,820.50
6. Step 6: Final answer
   x = 1,381,521,749.70