Finding the Third Proportional to 154,872 and 318,081.94

Step by Step Solution

1. Step 1: Write the proportion equation
   154,872 : 318,081.94 = 318,081.94 : x
2. Step 2: Convert to fraction form
   154,872/318,081.94 = 318,081.94/x
3. Step 3: Cross multiply
   154,872x = 318,081.94 × 318,081.94
4. Step 4: Simplify right side
   154,872x = 101,176,118,963.75
5. Step 5: Solve for x
   x = 101,176,118,963.75/154,872
6. Step 6: Final answer
   x = 653,288.64