Finding the Third Proportional to 684,940 and 1,074,430

Step by Step Solution

1. Step 1: Write the proportion equation
   684,940 : 1,074,430 = 1,074,430 : x
2. Step 2: Convert to fraction form
   684,940/1,074,430 = 1,074,430/x
3. Step 3: Cross multiply
   684,940x = 1,074,430 × 1,074,430
4. Step 4: Simplify right side
   684,940x = 1,154,399,824,900
5. Step 5: Solve for x
   x = 1,154,399,824,900/684,940
6. Step 6: Final answer
   x = 1,685,402.85