Finding the Third Proportional to 8,242,411 and 12,608,385

Step by Step Solution

1. Step 1: Write the proportion equation
   8,242,411 : 12,608,385 = 12,608,385 : x
2. Step 2: Convert to fraction form
   8,242,411/12,608,385 = 12,608,385/x
3. Step 3: Cross multiply
   8,242,411x = 12,608,385 × 12,608,385
4. Step 4: Simplify right side
   8,242,411x = 158,971,372,308,225
5. Step 5: Solve for x
   x = 158,971,372,308,225/8,242,411
6. Step 6: Final answer
   x = 19,286,998.95