Finding the Third Proportional to 108,720 and 153,101.50

Step by Step Solution

1. Step 1: Write the proportion equation
   108,720 : 153,101.50 = 153,101.50 : x
2. Step 2: Convert to fraction form
   108,720/153,101.50 = 153,101.50/x
3. Step 3: Cross multiply
   108,720x = 153,101.50 × 153,101.50
4. Step 4: Simplify right side
   108,720x = 23,440,069,302.25
5. Step 5: Solve for x
   x = 23,440,069,302.25/108,720
6. Step 6: Final answer
   x = 215,600.34