Finding the Third Proportional to 5,272,346 and 8,439,186

Step by Step Solution

1. Step 1: Write the proportion equation
   5,272,346 : 8,439,186 = 8,439,186 : x
2. Step 2: Convert to fraction form
   5,272,346/8,439,186 = 8,439,186/x
3. Step 3: Cross multiply
   5,272,346x = 8,439,186 × 8,439,186
4. Step 4: Simplify right side
   5,272,346x = 71,219,860,342,596
5. Step 5: Solve for x
   x = 71,219,860,342,596/5,272,346
6. Step 6: Final answer
   x = 13,508,191.67