Finding the Third Proportional to 143,901 and 316,354.50

Step by Step Solution

1. Step 1: Write the proportion equation
   143,901 : 316,354.50 = 316,354.50 : x
2. Step 2: Convert to fraction form
   143,901/316,354.50 = 316,354.50/x
3. Step 3: Cross multiply
   143,901x = 316,354.50 × 316,354.50
4. Step 4: Simplify right side
   143,901x = 100,080,169,670.25
5. Step 5: Solve for x
   x = 100,080,169,670.25/143,901
6. Step 6: Final answer
   x = 695,479.32