Finding the Third Proportional to 302,833,849.50 and 647,636,755.50

Step by Step Solution

1. Step 1: Write the proportion equation
   302,833,849.50 : 647,636,755.50 = 647,636,755.50 : x
2. Step 2: Convert to fraction form
   302,833,849.50/647,636,755.50 = 647,636,755.50/x
3. Step 3: Cross multiply
   302,833,849.50x = 647,636,755.50 × 647,636,755.50
4. Step 4: Simplify right side
   302,833,849.50x = 419,433,367,074,566,784
5. Step 5: Solve for x
   x = 419,433,367,074,566,784/302,833,849.50
6. Step 6: Final answer
   x = 1,385,028,020.37