Finding the Third Proportional to 9,638,840 and 12,850,352

Step by Step Solution

1. Step 1: Write the proportion equation
   9,638,840 : 12,850,352 = 12,850,352 : x
2. Step 2: Convert to fraction form
   9,638,840/12,850,352 = 12,850,352/x
3. Step 3: Cross multiply
   9,638,840x = 12,850,352 × 12,850,352
4. Step 4: Simplify right side
   9,638,840x = 165,131,546,523,904
5. Step 5: Solve for x
   x = 165,131,546,523,904/9,638,840
6. Step 6: Final answer
   x = 17,131,889.99