Finding the Third Proportional to 2,123,406 and 4,584,688

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123,406 : 4,584,688 = 4,584,688 : x
2. Step 2: Convert to fraction form
   2,123,406/4,584,688 = 4,584,688/x
3. Step 3: Cross multiply
   2,123,406x = 4,584,688 × 4,584,688
4. Step 4: Simplify right side
   2,123,406x = 21,019,364,057,344
5. Step 5: Solve for x
   x = 21,019,364,057,344/2,123,406
6. Step 6: Final answer
   x = 9,898,890.77