Finding the Third Proportional to 111,849,781.50 and 243,060,313.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,849,781.50 : 243,060,313.50 = 243,060,313.50 : x
2. Step 2: Convert to fraction form
   111,849,781.50/243,060,313.50 = 243,060,313.50/x
3. Step 3: Cross multiply
   111,849,781.50x = 243,060,313.50 × 243,060,313.50
4. Step 4: Simplify right side
   111,849,781.50x = 59,078,315,998,718,280
5. Step 5: Solve for x
   x = 59,078,315,998,718,280/111,849,781.50
6. Step 6: Final answer
   x = 528,193,396.59