Finding the Third Proportional to 905,521 and 1,225,419

Step by Step Solution

1. Step 1: Write the proportion equation
   905,521 : 1,225,419 = 1,225,419 : x
2. Step 2: Convert to fraction form
   905,521/1,225,419 = 1,225,419/x
3. Step 3: Cross multiply
   905,521x = 1,225,419 × 1,225,419
4. Step 4: Simplify right side
   905,521x = 1,501,651,725,561
5. Step 5: Solve for x
   x = 1,501,651,725,561/905,521
6. Step 6: Final answer
   x = 1,658,328.99