Finding the Third Proportional to 1,157,396 and 1,561,269

Step by Step Solution

1. Step 1: Write the proportion equation
   1,157,396 : 1,561,269 = 1,561,269 : x
2. Step 2: Convert to fraction form
   1,157,396/1,561,269 = 1,561,269/x
3. Step 3: Cross multiply
   1,157,396x = 1,561,269 × 1,561,269
4. Step 4: Simplify right side
   1,157,396x = 2,437,560,890,361
5. Step 5: Solve for x
   x = 2,437,560,890,361/1,157,396
6. Step 6: Final answer
   x = 2,106,073.37