Finding the Third Proportional to 28,578 and 59,312

Step by Step Solution

1. Step 1: Write the proportion equation
   28,578 : 59,312 = 59,312 : x
2. Step 2: Convert to fraction form
   28,578/59,312 = 59,312/x
3. Step 3: Cross multiply
   28,578x = 59,312 × 59,312
4. Step 4: Simplify right side
   28,578x = 3,517,913,344
5. Step 5: Solve for x
   x = 3,517,913,344/28,578
6. Step 6: Final answer
   x = 123,098.65