Finding the Third Proportional to 80,472 and 109,291.50

Step by Step Solution

1. Step 1: Write the proportion equation
   80,472 : 109,291.50 = 109,291.50 : x
2. Step 2: Convert to fraction form
   80,472/109,291.50 = 109,291.50/x
3. Step 3: Cross multiply
   80,472x = 109,291.50 × 109,291.50
4. Step 4: Simplify right side
   80,472x = 11,944,631,972.25
5. Step 5: Solve for x
   x = 11,944,631,972.25/80,472
6. Step 6: Final answer
   x = 148,432.15