Finding the Third Proportional to 138,175.50 and 297,492

Step by Step Solution

1. Step 1: Write the proportion equation
   138,175.50 : 297,492 = 297,492 : x
2. Step 2: Convert to fraction form
   138,175.50/297,492 = 297,492/x
3. Step 3: Cross multiply
   138,175.50x = 297,492 × 297,492
4. Step 4: Simplify right side
   138,175.50x = 88,501,490,064
5. Step 5: Solve for x
   x = 88,501,490,064/138,175.50
6. Step 6: Final answer
   x = 640,500.60