Finding the Third Proportional to 64,557 and 139,836.38

Step by Step Solution

1. Step 1: Write the proportion equation
   64,557 : 139,836.38 = 139,836.38 : x
2. Step 2: Convert to fraction form
   64,557/139,836.38 = 139,836.38/x
3. Step 3: Cross multiply
   64,557x = 139,836.38 × 139,836.38
4. Step 4: Simplify right side
   64,557x = 19,554,211,773.14
5. Step 5: Solve for x
   x = 19,554,211,773.14/64,557
6. Step 6: Final answer
   x = 302,898.40