Finding the Third Proportional to 2,499,991 and 5,379,365

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499,991 : 5,379,365 = 5,379,365 : x
2. Step 2: Convert to fraction form
   2,499,991/5,379,365 = 5,379,365/x
3. Step 3: Cross multiply
   2,499,991x = 5,379,365 × 5,379,365
4. Step 4: Simplify right side
   2,499,991x = 28,937,567,803,225
5. Step 5: Solve for x
   x = 28,937,567,803,225/2,499,991
6. Step 6: Final answer
   x = 11,575,068.79