Finding the Third Proportional to 154,801.50 and 316,162.50

Step by Step Solution

1. Step 1: Write the proportion equation
   154,801.50 : 316,162.50 = 316,162.50 : x
2. Step 2: Convert to fraction form
   154,801.50/316,162.50 = 316,162.50/x
3. Step 3: Cross multiply
   154,801.50x = 316,162.50 × 316,162.50
4. Step 4: Simplify right side
   154,801.50x = 99,958,726,406.25
5. Step 5: Solve for x
   x = 99,958,726,406.25/154,801.50
6. Step 6: Final answer
   x = 645,721.95