Finding the Third Proportional to 63,009.75 and 99,820.50

Step by Step Solution

1. Step 1: Write the proportion equation
   63,009.75 : 99,820.50 = 99,820.50 : x
2. Step 2: Convert to fraction form
   63,009.75/99,820.50 = 99,820.50/x
3. Step 3: Cross multiply
   63,009.75x = 99,820.50 × 99,820.50
4. Step 4: Simplify right side
   63,009.75x = 9,964,132,220.25
5. Step 5: Solve for x
   x = 9,964,132,220.25/63,009.75
6. Step 6: Final answer
   x = 158,136.36