Finding the Third Proportional to 917,846 and 1,988,208

Step by Step Solution

1. Step 1: Write the proportion equation
   917,846 : 1,988,208 = 1,988,208 : x
2. Step 2: Convert to fraction form
   917,846/1,988,208 = 1,988,208/x
3. Step 3: Cross multiply
   917,846x = 1,988,208 × 1,988,208
4. Step 4: Simplify right side
   917,846x = 3,952,971,051,264
5. Step 5: Solve for x
   x = 3,952,971,051,264/917,846
6. Step 6: Final answer
   x = 4,306,791.17