Finding the Third Proportional to 12,138,290 and 26,003,615.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,138,290 : 26,003,615.50 = 26,003,615.50 : x
2. Step 2: Convert to fraction form
   12,138,290/26,003,615.50 = 26,003,615.50/x
3. Step 3: Cross multiply
   12,138,290x = 26,003,615.50 × 26,003,615.50
4. Step 4: Simplify right side
   12,138,290x = 676,188,019,071,840.25
5. Step 5: Solve for x
   x = 676,188,019,071,840.25/12,138,290
6. Step 6: Final answer
   x = 55,707,024.55