Finding the Third Proportional to 2,123,697 and 4,585,485

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123,697 : 4,585,485 = 4,585,485 : x
2. Step 2: Convert to fraction form
   2,123,697/4,585,485 = 4,585,485/x
3. Step 3: Cross multiply
   2,123,697x = 4,585,485 × 4,585,485
4. Step 4: Simplify right side
   2,123,697x = 21,026,672,685,225
5. Step 5: Solve for x
   x = 21,026,672,685,225/2,123,697
6. Step 6: Final answer
   x = 9,900,975.84