Finding the Third Proportional to 138,315 and 301,764.75

Step by Step Solution

1. Step 1: Write the proportion equation
   138,315 : 301,764.75 = 301,764.75 : x
2. Step 2: Convert to fraction form
   138,315/301,764.75 = 301,764.75/x
3. Step 3: Cross multiply
   138,315x = 301,764.75 × 301,764.75
4. Step 4: Simplify right side
   138,315x = 91,061,964,342.56
5. Step 5: Solve for x
   x = 91,061,964,342.56/138,315
6. Step 6: Final answer
   x = 658,366.51