Finding the Third Proportional to 64,549.13 and 139,822.31

Step by Step Solution

1. Step 1: Write the proportion equation
   64,549.13 : 139,822.31 = 139,822.31 : x
2. Step 2: Convert to fraction form
   64,549.13/139,822.31 = 139,822.31/x
3. Step 3: Cross multiply
   64,549.13x = 139,822.31 × 139,822.31
4. Step 4: Simplify right side
   64,549.13x = 19,550,279,072.85
5. Step 5: Solve for x
   x = 19,550,279,072.85/64,549.13
6. Step 6: Final answer
   x = 302,874.42