Finding the Third Proportional to 12,870,258 and 26,631,408

Step by Step Solution

1. Step 1: Write the proportion equation
   12,870,258 : 26,631,408 = 26,631,408 : x
2. Step 2: Convert to fraction form
   12,870,258/26,631,408 = 26,631,408/x
3. Step 3: Cross multiply
   12,870,258x = 26,631,408 × 26,631,408
4. Step 4: Simplify right side
   12,870,258x = 709,231,892,062,464
5. Step 5: Solve for x
   x = 709,231,892,062,464/12,870,258
6. Step 6: Final answer
   x = 55,106,268.43