Finding the Third Proportional to 140,142,769.50 and 306,678,019.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,142,769.50 : 306,678,019.50 = 306,678,019.50 : x
2. Step 2: Convert to fraction form
   140,142,769.50/306,678,019.50 = 306,678,019.50/x
3. Step 3: Cross multiply
   140,142,769.50x = 306,678,019.50 × 306,678,019.50
4. Step 4: Simplify right side
   140,142,769.50x = 94,051,407,644,442,384
5. Step 5: Solve for x
   x = 94,051,407,644,442,384/140,142,769.50
6. Step 6: Final answer
   x = 671,111,381.49