Finding the Third Proportional to 3,932,779.50 and 8,412,066

Step by Step Solution

1. Step 1: Write the proportion equation
   3,932,779.50 : 8,412,066 = 8,412,066 : x
2. Step 2: Convert to fraction form
   3,932,779.50/8,412,066 = 8,412,066/x
3. Step 3: Cross multiply
   3,932,779.50x = 8,412,066 × 8,412,066
4. Step 4: Simplify right side
   3,932,779.50x = 70,762,854,388,356
5. Step 5: Solve for x
   x = 70,762,854,388,356/3,932,779.50
6. Step 6: Final answer
   x = 17,993,089.72