Finding the Third Proportional to 98,409 and 215,731.50

Step by Step Solution

1. Step 1: Write the proportion equation
   98,409 : 215,731.50 = 215,731.50 : x
2. Step 2: Convert to fraction form
   98,409/215,731.50 = 215,731.50/x
3. Step 3: Cross multiply
   98,409x = 215,731.50 × 215,731.50
4. Step 4: Simplify right side
   98,409x = 46,540,080,092.25
5. Step 5: Solve for x
   x = 46,540,080,092.25/98,409
6. Step 6: Final answer
   x = 472,925.04