Finding the Third Proportional to 28,649.25 and 63,128.25

Step by Step Solution

1. Step 1: Write the proportion equation
   28,649.25 : 63,128.25 = 63,128.25 : x
2. Step 2: Convert to fraction form
   28,649.25/63,128.25 = 63,128.25/x
3. Step 3: Cross multiply
   28,649.25x = 63,128.25 × 63,128.25
4. Step 4: Simplify right side
   28,649.25x = 3,985,175,948.06
5. Step 5: Solve for x
   x = 3,985,175,948.06/28,649.25
6. Step 6: Final answer
   x = 139,102.28