Finding the Third Proportional to 98,608.50 and 215,875.69

Step by Step Solution

1. Step 1: Write the proportion equation
   98,608.50 : 215,875.69 = 215,875.69 : x
2. Step 2: Convert to fraction form
   98,608.50/215,875.69 = 215,875.69/x
3. Step 3: Cross multiply
   98,608.50x = 215,875.69 × 215,875.69
4. Step 4: Simplify right side
   98,608.50x = 46,602,312,453.60
5. Step 5: Solve for x
   x = 46,602,312,453.60/98,608.50
6. Step 6: Final answer
   x = 472,599.34