Finding the Third Proportional to 613,458 and 1,312,208

Step by Step Solution

1. Step 1: Write the proportion equation
   613,458 : 1,312,208 = 1,312,208 : x
2. Step 2: Convert to fraction form
   613,458/1,312,208 = 1,312,208/x
3. Step 3: Cross multiply
   613,458x = 1,312,208 × 1,312,208
4. Step 4: Simplify right side
   613,458x = 1,721,889,835,264
5. Step 5: Solve for x
   x = 1,721,889,835,264/613,458
6. Step 6: Final answer
   x = 2,806,858.55