Finding the Third Proportional to 103,627.50 and 216,639

Step by Step Solution

1. Step 1: Write the proportion equation
   103,627.50 : 216,639 = 216,639 : x
2. Step 2: Convert to fraction form
   103,627.50/216,639 = 216,639/x
3. Step 3: Cross multiply
   103,627.50x = 216,639 × 216,639
4. Step 4: Simplify right side
   103,627.50x = 46,932,456,321
5. Step 5: Solve for x
   x = 46,932,456,321/103,627.50
6. Step 6: Final answer
   x = 452,895.77