Finding the Third Proportional to 917,910 and 1,988,316

Step by Step Solution

1. Step 1: Write the proportion equation
   917,910 : 1,988,316 = 1,988,316 : x
2. Step 2: Convert to fraction form
   917,910/1,988,316 = 1,988,316/x
3. Step 3: Cross multiply
   917,910x = 1,988,316 × 1,988,316
4. Step 4: Simplify right side
   917,910x = 3,953,400,515,856
5. Step 5: Solve for x
   x = 3,953,400,515,856/917,910
6. Step 6: Final answer
   x = 4,306,958.76