Finding the Third Proportional to 64,562.10 and 139,498.21

Step by Step Solution

1. Step 1: Write the proportion equation
   64,562.10 : 139,498.21 = 139,498.21 : x
2. Step 2: Convert to fraction form
   64,562.10/139,498.21 = 139,498.21/x
3. Step 3: Cross multiply
   64,562.10x = 139,498.21 × 139,498.21
4. Step 4: Simplify right side
   64,562.10x = 19,459,749,764.93
5. Step 5: Solve for x
   x = 19,459,749,764.93/64,562.10
6. Step 6: Final answer
   x = 301,411.36