Finding the Third Proportional to 98,478.75 and 143,411.50

Step by Step Solution

1. Step 1: Write the proportion equation
   98,478.75 : 143,411.50 = 143,411.50 : x
2. Step 2: Convert to fraction form
   98,478.75/143,411.50 = 143,411.50/x
3. Step 3: Cross multiply
   98,478.75x = 143,411.50 × 143,411.50
4. Step 4: Simplify right side
   98,478.75x = 20,566,858,332.25
5. Step 5: Solve for x
   x = 20,566,858,332.25/98,478.75
6. Step 6: Final answer
   x = 208,845.65