Finding the Third Proportional to 87,427.69 and 139,023.53

Step by Step Solution

1. Step 1: Write the proportion equation
   87,427.69 : 139,023.53 = 139,023.53 : x
2. Step 2: Convert to fraction form
   87,427.69/139,023.53 = 139,023.53/x
3. Step 3: Cross multiply
   87,427.69x = 139,023.53 × 139,023.53
4. Step 4: Simplify right side
   87,427.69x = 19,327,541,155.10
5. Step 5: Solve for x
   x = 19,327,541,155.10/87,427.69
6. Step 6: Final answer
   x = 221,068.88