Finding the Third Proportional to 4,224,990.50 and 9,123,486.50

Step by Step Solution

1. Step 1: Write the proportion equation
   4,224,990.50 : 9,123,486.50 = 9,123,486.50 : x
2. Step 2: Convert to fraction form
   4,224,990.50/9,123,486.50 = 9,123,486.50/x
3. Step 3: Cross multiply
   4,224,990.50x = 9,123,486.50 × 9,123,486.50
4. Step 4: Simplify right side
   4,224,990.50x = 83,238,005,915,682.25
5. Step 5: Solve for x
   x = 83,238,005,915,682.25/4,224,990.50
6. Step 6: Final answer
   x = 19,701,347.47