Finding the Third Proportional to 64,614.38 and 139,606.88

Step by Step Solution

1. Step 1: Write the proportion equation
   64,614.38 : 139,606.88 = 139,606.88 : x
2. Step 2: Convert to fraction form
   64,614.38/139,606.88 = 139,606.88/x
3. Step 3: Cross multiply
   64,614.38x = 139,606.88 × 139,606.88
4. Step 4: Simplify right side
   64,614.38x = 19,490,079,547.27
5. Step 5: Solve for x
   x = 19,490,079,547.27/64,614.38
6. Step 6: Final answer
   x = 301,636.90