Finding the Third Proportional to 412,122 and 878,679.25

Step by Step Solution

1. Step 1: Write the proportion equation
   412,122 : 878,679.25 = 878,679.25 : x
2. Step 2: Convert to fraction form
   412,122/878,679.25 = 878,679.25/x
3. Step 3: Cross multiply
   412,122x = 878,679.25 × 878,679.25
4. Step 4: Simplify right side
   412,122x = 772,077,224,380.56
5. Step 5: Solve for x
   x = 772,077,224,380.56/412,122
6. Step 6: Final answer
   x = 1,873,419.10