Finding the Third Proportional to 917,572 and 2,159,118

Step by Step Solution

1. Step 1: Write the proportion equation
   917,572 : 2,159,118 = 2,159,118 : x
2. Step 2: Convert to fraction form
   917,572/2,159,118 = 2,159,118/x
3. Step 3: Cross multiply
   917,572x = 2,159,118 × 2,159,118
4. Step 4: Simplify right side
   917,572x = 4,661,790,537,924
5. Step 5: Solve for x
   x = 4,661,790,537,924/917,572
6. Step 6: Final answer
   x = 5,080,571.92