Finding the Third Proportional to 1,231,588 and 1,961,213

Step by Step Solution

1. Step 1: Write the proportion equation
   1,231,588 : 1,961,213 = 1,961,213 : x
2. Step 2: Convert to fraction form
   1,231,588/1,961,213 = 1,961,213/x
3. Step 3: Cross multiply
   1,231,588x = 1,961,213 × 1,961,213
4. Step 4: Simplify right side
   1,231,588x = 3,846,356,431,369
5. Step 5: Solve for x
   x = 3,846,356,431,369/1,231,588
6. Step 6: Final answer
   x = 3,123,086.97