Finding the Third Proportional to 904,217 and 1,231,389

Step by Step Solution

1. Step 1: Write the proportion equation
   904,217 : 1,231,389 = 1,231,389 : x
2. Step 2: Convert to fraction form
   904,217/1,231,389 = 1,231,389/x
3. Step 3: Cross multiply
   904,217x = 1,231,389 × 1,231,389
4. Step 4: Simplify right side
   904,217x = 1,516,318,869,321
5. Step 5: Solve for x
   x = 1,516,318,869,321/904,217
6. Step 6: Final answer
   x = 1,676,941.34