Finding the Third Proportional to 9,911,756 and 13,958,148

Step by Step Solution

1. Step 1: Write the proportion equation
   9,911,756 : 13,958,148 = 13,958,148 : x
2. Step 2: Convert to fraction form
   9,911,756/13,958,148 = 13,958,148/x
3. Step 3: Cross multiply
   9,911,756x = 13,958,148 × 13,958,148
4. Step 4: Simplify right side
   9,911,756x = 194,829,895,589,904
5. Step 5: Solve for x
   x = 194,829,895,589,904/9,911,756
6. Step 6: Final answer
   x = 19,656,445.90