Finding the Third Proportional to 100,617.50 and 207,614

Step by Step Solution

1. Step 1: Write the proportion equation
   100,617.50 : 207,614 = 207,614 : x
2. Step 2: Convert to fraction form
   100,617.50/207,614 = 207,614/x
3. Step 3: Cross multiply
   100,617.50x = 207,614 × 207,614
4. Step 4: Simplify right side
   100,617.50x = 43,103,572,996
5. Step 5: Solve for x
   x = 43,103,572,996/100,617.50
6. Step 6: Final answer
   x = 428,390.42