Finding the Third Proportional to 7,881,432 and 16,978,672

Step by Step Solution

1. Step 1: Write the proportion equation
   7,881,432 : 16,978,672 = 16,978,672 : x
2. Step 2: Convert to fraction form
   7,881,432/16,978,672 = 16,978,672/x
3. Step 3: Cross multiply
   7,881,432x = 16,978,672 × 16,978,672
4. Step 4: Simplify right side
   7,881,432x = 288,275,302,883,584
5. Step 5: Solve for x
   x = 288,275,302,883,584/7,881,432
6. Step 6: Final answer
   x = 36,576,513.37