Finding the Third Proportional to 5,659,638 and 12,215,557.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,659,638 : 12,215,557.50 = 12,215,557.50 : x
2. Step 2: Convert to fraction form
   5,659,638/12,215,557.50 = 12,215,557.50/x
3. Step 3: Cross multiply
   5,659,638x = 12,215,557.50 × 12,215,557.50
4. Step 4: Simplify right side
   5,659,638x = 149,219,845,035,806.25
5. Step 5: Solve for x
   x = 149,219,845,035,806.25/5,659,638
6. Step 6: Final answer
   x = 26,365,616.50