Finding the Third Proportional to 87,734.25 and 139,475.25

Step by Step Solution

1. Step 1: Write the proportion equation
   87,734.25 : 139,475.25 = 139,475.25 : x
2. Step 2: Convert to fraction form
   87,734.25/139,475.25 = 139,475.25/x
3. Step 3: Cross multiply
   87,734.25x = 139,475.25 × 139,475.25
4. Step 4: Simplify right side
   87,734.25x = 19,453,345,362.56
5. Step 5: Solve for x
   x = 19,453,345,362.56/87,734.25
6. Step 6: Final answer
   x = 221,730.34