Finding the Third Proportional to 9,978,156 and 13,902,084

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978,156 : 13,902,084 = 13,902,084 : x
2. Step 2: Convert to fraction form
   9,978,156/13,902,084 = 13,902,084/x
3. Step 3: Cross multiply
   9,978,156x = 13,902,084 × 13,902,084
4. Step 4: Simplify right side
   9,978,156x = 193,267,939,543,056
5. Step 5: Solve for x
   x = 193,267,939,543,056/9,978,156
6. Step 6: Final answer
   x = 19,369,103.82