Finding the Third Proportional to 149,461.50 and 315,805.50

Step by Step Solution

1. Step 1: Write the proportion equation
   149,461.50 : 315,805.50 = 315,805.50 : x
2. Step 2: Convert to fraction form
   149,461.50/315,805.50 = 315,805.50/x
3. Step 3: Cross multiply
   149,461.50x = 315,805.50 × 315,805.50
4. Step 4: Simplify right side
   149,461.50x = 99,733,113,830.25
5. Step 5: Solve for x
   x = 99,733,113,830.25/149,461.50
6. Step 6: Final answer
   x = 667,282.97