Finding the Third Proportional to 677,994 and 920,790

Step by Step Solution

1. Step 1: Write the proportion equation
   677,994 : 920,790 = 920,790 : x
2. Step 2: Convert to fraction form
   677,994/920,790 = 920,790/x
3. Step 3: Cross multiply
   677,994x = 920,790 × 920,790
4. Step 4: Simplify right side
   677,994x = 847,854,224,100
5. Step 5: Solve for x
   x = 847,854,224,100/677,994
6. Step 6: Final answer
   x = 1,250,533.52