Finding the Third Proportional to 584,415 and 876,637.69

Step by Step Solution

1. Step 1: Write the proportion equation
   584,415 : 876,637.69 = 876,637.69 : x
2. Step 2: Convert to fraction form
   584,415/876,637.69 = 876,637.69/x
3. Step 3: Cross multiply
   584,415x = 876,637.69 × 876,637.69
4. Step 4: Simplify right side
   584,415x = 768,493,635,145.35
5. Step 5: Solve for x
   x = 768,493,635,145.35/584,415
6. Step 6: Final answer
   x = 1,314,979.31