Finding the Third Proportional to 840,226 and 1,291,488

Step by Step Solution

1. Step 1: Write the proportion equation
   840,226 : 1,291,488 = 1,291,488 : x
2. Step 2: Convert to fraction form
   840,226/1,291,488 = 1,291,488/x
3. Step 3: Cross multiply
   840,226x = 1,291,488 × 1,291,488
4. Step 4: Simplify right side
   840,226x = 1,667,941,254,144
5. Step 5: Solve for x
   x = 1,667,941,254,144/840,226
6. Step 6: Final answer
   x = 1,985,110.26