Finding the Third Proportional to 12,578,357 and 26,606,978.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,578,357 : 26,606,978.50 = 26,606,978.50 : x
2. Step 2: Convert to fraction form
   12,578,357/26,606,978.50 = 26,606,978.50/x
3. Step 3: Cross multiply
   12,578,357x = 26,606,978.50 × 26,606,978.50
4. Step 4: Simplify right side
   12,578,357x = 707,931,304,899,462.25
5. Step 5: Solve for x
   x = 707,931,304,899,462.25/12,578,357
6. Step 6: Final answer
   x = 56,281,699.18