Finding the Third Proportional to 143,976 and 316,584

Step by Step Solution

1. Step 1: Write the proportion equation
   143,976 : 316,584 = 316,584 : x
2. Step 2: Convert to fraction form
   143,976/316,584 = 316,584/x
3. Step 3: Cross multiply
   143,976x = 316,584 × 316,584
4. Step 4: Simplify right side
   143,976x = 100,225,429,056
5. Step 5: Solve for x
   x = 100,225,429,056/143,976
6. Step 6: Final answer
   x = 696,125.94