Finding the Third Proportional to 63,779.06 and 139,642.31

Step by Step Solution

1. Step 1: Write the proportion equation
   63,779.06 : 139,642.31 = 139,642.31 : x
2. Step 2: Convert to fraction form
   63,779.06/139,642.31 = 139,642.31/x
3. Step 3: Cross multiply
   63,779.06x = 139,642.31 × 139,642.31
4. Step 4: Simplify right side
   63,779.06x = 19,499,975,440.35
5. Step 5: Solve for x
   x = 19,499,975,440.35/63,779.06
6. Step 6: Final answer
   x = 305,742.59