Finding the Third Proportional to 5,607,538 and 8,401,978.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,607,538 : 8,401,978.50 = 8,401,978.50 : x
2. Step 2: Convert to fraction form
   5,607,538/8,401,978.50 = 8,401,978.50/x
3. Step 3: Cross multiply
   5,607,538x = 8,401,978.50 × 8,401,978.50
4. Step 4: Simplify right side
   5,607,538x = 70,593,242,714,462.25
5. Step 5: Solve for x
   x = 70,593,242,714,462.25/5,607,538
6. Step 6: Final answer
   x = 12,588,990.52