Finding the Third Proportional to 70,510.50 and 109,231.50

Step by Step Solution

1. Step 1: Write the proportion equation
   70,510.50 : 109,231.50 = 109,231.50 : x
2. Step 2: Convert to fraction form
   70,510.50/109,231.50 = 109,231.50/x
3. Step 3: Cross multiply
   70,510.50x = 109,231.50 × 109,231.50
4. Step 4: Simplify right side
   70,510.50x = 11,931,520,592.25
5. Step 5: Solve for x
   x = 11,931,520,592.25/70,510.50
6. Step 6: Final answer
   x = 169,216.22