Finding the Third Proportional to 64,760.63 and 139,362.75

Step by Step Solution

1. Step 1: Write the proportion equation
   64,760.63 : 139,362.75 = 139,362.75 : x
2. Step 2: Convert to fraction form
   64,760.63/139,362.75 = 139,362.75/x
3. Step 3: Cross multiply
   64,760.63x = 139,362.75 × 139,362.75
4. Step 4: Simplify right side
   64,760.63x = 19,421,976,087.56
5. Step 5: Solve for x
   x = 19,421,976,087.56/64,760.63
6. Step 6: Final answer
   x = 299,904.09