Finding the Third Proportional to 28,431 and 62,390.25

Step by Step Solution

1. Step 1: Write the proportion equation
   28,431 : 62,390.25 = 62,390.25 : x
2. Step 2: Convert to fraction form
   28,431/62,390.25 = 62,390.25/x
3. Step 3: Cross multiply
   28,431x = 62,390.25 × 62,390.25
4. Step 4: Simplify right side
   28,431x = 3,892,543,295.06
5. Step 5: Solve for x
   x = 3,892,543,295.06/28,431
6. Step 6: Final answer
   x = 136,911.94