Finding the Third Proportional to 910,072 and 1,977,612

Step by Step Solution

1. Step 1: Write the proportion equation
   910,072 : 1,977,612 = 1,977,612 : x
2. Step 2: Convert to fraction form
   910,072/1,977,612 = 1,977,612/x
3. Step 3: Cross multiply
   910,072x = 1,977,612 × 1,977,612
4. Step 4: Simplify right side
   910,072x = 3,910,949,222,544
5. Step 5: Solve for x
   x = 3,910,949,222,544/910,072
6. Step 6: Final answer
   x = 4,297,406.38