Finding the Third Proportional to 28,470 and 62,389.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,470 : 62,389.50 = 62,389.50 : x
2. Step 2: Convert to fraction form
   28,470/62,389.50 = 62,389.50/x
3. Step 3: Cross multiply
   28,470x = 62,389.50 × 62,389.50
4. Step 4: Simplify right side
   28,470x = 3,892,449,710.25
5. Step 5: Solve for x
   x = 3,892,449,710.25/28,470
6. Step 6: Final answer
   x = 136,721.10