Finding the Third Proportional to 12,105,621 and 26,123,611.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,105,621 : 26,123,611.50 = 26,123,611.50 : x
2. Step 2: Convert to fraction form
   12,105,621/26,123,611.50 = 26,123,611.50/x
3. Step 3: Cross multiply
   12,105,621x = 26,123,611.50 × 26,123,611.50
4. Step 4: Simplify right side
   12,105,621x = 682,443,077,802,932.25
5. Step 5: Solve for x
   x = 682,443,077,802,932.25/12,105,621
6. Step 6: Final answer
   x = 56,374,066.05