Finding the Third Proportional to 5,238,578 and 7,877,364

Step by Step Solution

1. Step 1: Write the proportion equation
   5,238,578 : 7,877,364 = 7,877,364 : x
2. Step 2: Convert to fraction form
   5,238,578/7,877,364 = 7,877,364/x
3. Step 3: Cross multiply
   5,238,578x = 7,877,364 × 7,877,364
4. Step 4: Simplify right side
   5,238,578x = 62,052,863,588,496
5. Step 5: Solve for x
   x = 62,052,863,588,496/5,238,578
6. Step 6: Final answer
   x = 11,845,364.06