Finding the Third Proportional to 149,398.88 and 323,689.50

Step by Step Solution

1. Step 1: Write the proportion equation
   149,398.88 : 323,689.50 = 323,689.50 : x
2. Step 2: Convert to fraction form
   149,398.88/323,689.50 = 323,689.50/x
3. Step 3: Cross multiply
   149,398.88x = 323,689.50 × 323,689.50
4. Step 4: Simplify right side
   149,398.88x = 104,774,892,410.25
5. Step 5: Solve for x
   x = 104,774,892,410.25/149,398.88
6. Step 6: Final answer
   x = 701,309.78