Finding the Third Proportional to 138,091.50 and 297,324

Step by Step Solution

1. Step 1: Write the proportion equation
   138,091.50 : 297,324 = 297,324 : x
2. Step 2: Convert to fraction form
   138,091.50/297,324 = 297,324/x
3. Step 3: Cross multiply
   138,091.50x = 297,324 × 297,324
4. Step 4: Simplify right side
   138,091.50x = 88,401,560,976
5. Step 5: Solve for x
   x = 88,401,560,976/138,091.50
6. Step 6: Final answer
   x = 640,166.56