Finding the Third Proportional to 2,535,620 and 5,638,168

Step by Step Solution

1. Step 1: Write the proportion equation
   2,535,620 : 5,638,168 = 5,638,168 : x
2. Step 2: Convert to fraction form
   2,535,620/5,638,168 = 5,638,168/x
3. Step 3: Cross multiply
   2,535,620x = 5,638,168 × 5,638,168
4. Step 4: Simplify right side
   2,535,620x = 31,788,938,396,224
5. Step 5: Solve for x
   x = 31,788,938,396,224/2,535,620
6. Step 6: Final answer
   x = 12,536,948.91