Finding the Third Proportional to 28,420 and 59,156

Step by Step Solution

1. Step 1: Write the proportion equation
   28,420 : 59,156 = 59,156 : x
2. Step 2: Convert to fraction form
   28,420/59,156 = 59,156/x
3. Step 3: Cross multiply
   28,420x = 59,156 × 59,156
4. Step 4: Simplify right side
   28,420x = 3,499,432,336
5. Step 5: Solve for x
   x = 3,499,432,336/28,420
6. Step 6: Final answer
   x = 123,132.74