Finding the Third Proportional to 753,915 and 1,638,726

Step by Step Solution

1. Step 1: Write the proportion equation
   753,915 : 1,638,726 = 1,638,726 : x
2. Step 2: Convert to fraction form
   753,915/1,638,726 = 1,638,726/x
3. Step 3: Cross multiply
   753,915x = 1,638,726 × 1,638,726
4. Step 4: Simplify right side
   753,915x = 2,685,422,903,076
5. Step 5: Solve for x
   x = 2,685,422,903,076/753,915
6. Step 6: Final answer
   x = 3,561,970.39