Finding the Third Proportional to 1,638,342 and 2,457,513

Step by Step Solution

1. Step 1: Write the proportion equation
   1,638,342 : 2,457,513 = 2,457,513 : x
2. Step 2: Convert to fraction form
   1,638,342/2,457,513 = 2,457,513/x
3. Step 3: Cross multiply
   1,638,342x = 2,457,513 × 2,457,513
4. Step 4: Simplify right side
   1,638,342x = 6,039,370,145,169
5. Step 5: Solve for x
   x = 6,039,370,145,169/1,638,342
6. Step 6: Final answer
   x = 3,686,269.50