Finding the Third Proportional to 143,622 and 316,188

Step by Step Solution

1. Step 1: Write the proportion equation
   143,622 : 316,188 = 316,188 : x
2. Step 2: Convert to fraction form
   143,622/316,188 = 316,188/x
3. Step 3: Cross multiply
   143,622x = 316,188 × 316,188
4. Step 4: Simplify right side
   143,622x = 99,974,851,344
5. Step 5: Solve for x
   x = 99,974,851,344/143,622
6. Step 6: Final answer
   x = 696,097.06