Finding the Third Proportional to 1,434,388 and 3,121,146

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434,388 : 3,121,146 = 3,121,146 : x
2. Step 2: Convert to fraction form
   1,434,388/3,121,146 = 3,121,146/x
3. Step 3: Cross multiply
   1,434,388x = 3,121,146 × 3,121,146
4. Step 4: Simplify right side
   1,434,388x = 9,741,552,353,316
5. Step 5: Solve for x
   x = 9,741,552,353,316/1,434,388
6. Step 6: Final answer
   x = 6,791,434.64