Finding the Third Proportional to 28,390 and 59,720

Step by Step Solution

1. Step 1: Write the proportion equation
   28,390 : 59,720 = 59,720 : x
2. Step 2: Convert to fraction form
   28,390/59,720 = 59,720/x
3. Step 3: Cross multiply
   28,390x = 59,720 × 59,720
4. Step 4: Simplify right side
   28,390x = 3,566,478,400
5. Step 5: Solve for x
   x = 3,566,478,400/28,390
6. Step 6: Final answer
   x = 125,624.46