Finding the Third Proportional to 69,271.50 and 149,478

Step by Step Solution

1. Step 1: Write the proportion equation
   69,271.50 : 149,478 = 149,478 : x
2. Step 2: Convert to fraction form
   69,271.50/149,478 = 149,478/x
3. Step 3: Cross multiply
   69,271.50x = 149,478 × 149,478
4. Step 4: Simplify right side
   69,271.50x = 22,343,672,484
5. Step 5: Solve for x
   x = 22,343,672,484/69,271.50
6. Step 6: Final answer
   x = 322,552.17