Finding the Third Proportional to 149,299.50 and 316,095

Step by Step Solution

1. Step 1: Write the proportion equation
   149,299.50 : 316,095 = 316,095 : x
2. Step 2: Convert to fraction form
   149,299.50/316,095 = 316,095/x
3. Step 3: Cross multiply
   149,299.50x = 316,095 × 316,095
4. Step 4: Simplify right side
   149,299.50x = 99,916,049,025
5. Step 5: Solve for x
   x = 99,916,049,025/149,299.50
6. Step 6: Final answer
   x = 669,232.31