Finding the Third Proportional to 297,643.50 and 702,486

Step by Step Solution

1. Step 1: Write the proportion equation
   297,643.50 : 702,486 = 702,486 : x
2. Step 2: Convert to fraction form
   297,643.50/702,486 = 702,486/x
3. Step 3: Cross multiply
   297,643.50x = 702,486 × 702,486
4. Step 4: Simplify right side
   297,643.50x = 493,486,580,196
5. Step 5: Solve for x
   x = 493,486,580,196/297,643.50
6. Step 6: Final answer
   x = 1,657,978.69