Finding the Third Proportional to 7,798,572 and 12,123,136.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,798,572 : 12,123,136.50 = 12,123,136.50 : x
2. Step 2: Convert to fraction form
   7,798,572/12,123,136.50 = 12,123,136.50/x
3. Step 3: Cross multiply
   7,798,572x = 12,123,136.50 × 12,123,136.50
4. Step 4: Simplify right side
   7,798,572x = 146,970,438,597,632.25
5. Step 5: Solve for x
   x = 146,970,438,597,632.25/7,798,572
6. Step 6: Final answer
   x = 18,845,814.16