Finding the Third Proportional to 138,315.75 and 304,068

Step by Step Solution

1. Step 1: Write the proportion equation
   138,315.75 : 304,068 = 304,068 : x
2. Step 2: Convert to fraction form
   138,315.75/304,068 = 304,068/x
3. Step 3: Cross multiply
   138,315.75x = 304,068 × 304,068
4. Step 4: Simplify right side
   138,315.75x = 92,457,348,624
5. Step 5: Solve for x
   x = 92,457,348,624/138,315.75
6. Step 6: Final answer
   x = 668,451.34