Finding the Third Proportional to 69,321 and 99,132.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,321 : 99,132.50 = 99,132.50 : x
2. Step 2: Convert to fraction form
   69,321/99,132.50 = 99,132.50/x
3. Step 3: Cross multiply
   69,321x = 99,132.50 × 99,132.50
4. Step 4: Simplify right side
   69,321x = 9,827,252,556.25
5. Step 5: Solve for x
   x = 9,827,252,556.25/69,321
6. Step 6: Final answer
   x = 141,764.44