Finding the Third Proportional to 98,509.50 and 216,702

Step by Step Solution

1. Step 1: Write the proportion equation
   98,509.50 : 216,702 = 216,702 : x
2. Step 2: Convert to fraction form
   98,509.50/216,702 = 216,702/x
3. Step 3: Cross multiply
   98,509.50x = 216,702 × 216,702
4. Step 4: Simplify right side
   98,509.50x = 46,959,756,804
5. Step 5: Solve for x
   x = 46,959,756,804/98,509.50
6. Step 6: Final answer
   x = 476,702.82