Finding the Third Proportional to 2,123,690 and 4,585,476

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123,690 : 4,585,476 = 4,585,476 : x
2. Step 2: Convert to fraction form
   2,123,690/4,585,476 = 4,585,476/x
3. Step 3: Cross multiply
   2,123,690x = 4,585,476 × 4,585,476
4. Step 4: Simplify right side
   2,123,690x = 21,026,590,146,576
5. Step 5: Solve for x
   x = 21,026,590,146,576/2,123,690
6. Step 6: Final answer
   x = 9,900,969.61