Finding the Third Proportional to 2,123,682 and 4,585,457

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123,682 : 4,585,457 = 4,585,457 : x
2. Step 2: Convert to fraction form
   2,123,682/4,585,457 = 4,585,457/x
3. Step 3: Cross multiply
   2,123,682x = 4,585,457 × 4,585,457
4. Step 4: Simplify right side
   2,123,682x = 21,026,415,898,849
5. Step 5: Solve for x
   x = 21,026,415,898,849/2,123,682
6. Step 6: Final answer
   x = 9,900,924.86