Finding the Third Proportional to 316,291.50 and 697,374

Step by Step Solution

1. Step 1: Write the proportion equation
   316,291.50 : 697,374 = 697,374 : x
2. Step 2: Convert to fraction form
   316,291.50/697,374 = 697,374/x
3. Step 3: Cross multiply
   316,291.50x = 697,374 × 697,374
4. Step 4: Simplify right side
   316,291.50x = 486,330,495,876
5. Step 5: Solve for x
   x = 486,330,495,876/316,291.50
6. Step 6: Final answer
   x = 1,537,602.17