Finding the Third Proportional to 1,121,308 and 1,681,610

Step by Step Solution

1. Step 1: Write the proportion equation
   1,121,308 : 1,681,610 = 1,681,610 : x
2. Step 2: Convert to fraction form
   1,121,308/1,681,610 = 1,681,610/x
3. Step 3: Cross multiply
   1,121,308x = 1,681,610 × 1,681,610
4. Step 4: Simplify right side
   1,121,308x = 2,827,812,192,100
5. Step 5: Solve for x
   x = 2,827,812,192,100/1,121,308
6. Step 6: Final answer
   x = 2,521,887.11