Finding the Third Proportional to 98,698.50 and 140,666.63

Step by Step Solution

1. Step 1: Write the proportion equation
   98,698.50 : 140,666.63 = 140,666.63 : x
2. Step 2: Convert to fraction form
   98,698.50/140,666.63 = 140,666.63/x
3. Step 3: Cross multiply
   98,698.50x = 140,666.63 × 140,666.63
4. Step 4: Simplify right side
   98,698.50x = 19,787,099,388.89
5. Step 5: Solve for x
   x = 19,787,099,388.89/98,698.50
6. Step 6: Final answer
   x = 200,480.24