Finding the Third Proportional to 9,638,835 and 12,850,347

Step by Step Solution

1. Step 1: Write the proportion equation
   9,638,835 : 12,850,347 = 12,850,347 : x
2. Step 2: Convert to fraction form
   9,638,835/12,850,347 = 12,850,347/x
3. Step 3: Cross multiply
   9,638,835x = 12,850,347 × 12,850,347
4. Step 4: Simplify right side
   9,638,835x = 165,131,418,020,409
5. Step 5: Solve for x
   x = 165,131,418,020,409/9,638,835
6. Step 6: Final answer
   x = 17,131,885.55