Finding the Third Proportional to 63,448.31 and 139,446.56

Step by Step Solution

1. Step 1: Write the proportion equation
   63,448.31 : 139,446.56 = 139,446.56 : x
2. Step 2: Convert to fraction form
   63,448.31/139,446.56 = 139,446.56/x
3. Step 3: Cross multiply
   63,448.31x = 139,446.56 × 139,446.56
4. Step 4: Simplify right side
   63,448.31x = 19,445,343,793.07
5. Step 5: Solve for x
   x = 19,445,343,793.07/63,448.31
6. Step 6: Final answer
   x = 306,475.35