Finding the Third Proportional to 100,561.50 and 147,555

Step by Step Solution

1. Step 1: Write the proportion equation
   100,561.50 : 147,555 = 147,555 : x
2. Step 2: Convert to fraction form
   100,561.50/147,555 = 147,555/x
3. Step 3: Cross multiply
   100,561.50x = 147,555 × 147,555
4. Step 4: Simplify right side
   100,561.50x = 21,772,478,025
5. Step 5: Solve for x
   x = 21,772,478,025/100,561.50
6. Step 6: Final answer
   x = 216,509.08