Finding the Third Proportional to 642,238.50 and 1,411,597.50

Step by Step Solution

1. Step 1: Write the proportion equation
   642,238.50 : 1,411,597.50 = 1,411,597.50 : x
2. Step 2: Convert to fraction form
   642,238.50/1,411,597.50 = 1,411,597.50/x
3. Step 3: Cross multiply
   642,238.50x = 1,411,597.50 × 1,411,597.50
4. Step 4: Simplify right side
   642,238.50x = 1,992,607,502,006.25
5. Step 5: Solve for x
   x = 1,992,607,502,006.25/642,238.50
6. Step 6: Final answer
   x = 3,102,597.40