Finding the Third Proportional to 2,142,778 and 2,910,146

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142,778 : 2,910,146 = 2,910,146 : x
2. Step 2: Convert to fraction form
   2,142,778/2,910,146 = 2,910,146/x
3. Step 3: Cross multiply
   2,142,778x = 2,910,146 × 2,910,146
4. Step 4: Simplify right side
   2,142,778x = 8,468,949,741,316
5. Step 5: Solve for x
   x = 8,468,949,741,316/2,142,778
6. Step 6: Final answer
   x = 3,952,322.52