Finding the Third Proportional to 2,123,691 and 4,585,473

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123,691 : 4,585,473 = 4,585,473 : x
2. Step 2: Convert to fraction form
   2,123,691/4,585,473 = 4,585,473/x
3. Step 3: Cross multiply
   2,123,691x = 4,585,473 × 4,585,473
4. Step 4: Simplify right side
   2,123,691x = 21,026,562,633,729
5. Step 5: Solve for x
   x = 21,026,562,633,729/2,123,691
6. Step 6: Final answer
   x = 9,900,951.99