Finding the Third Proportional to 4,129,072 and 8,890,916

Step by Step Solution

1. Step 1: Write the proportion equation
   4,129,072 : 8,890,916 = 8,890,916 : x
2. Step 2: Convert to fraction form
   4,129,072/8,890,916 = 8,890,916/x
3. Step 3: Cross multiply
   4,129,072x = 8,890,916 × 8,890,916
4. Step 4: Simplify right side
   4,129,072x = 79,048,387,319,056
5. Step 5: Solve for x
   x = 79,048,387,319,056/4,129,072
6. Step 6: Final answer
   x = 19,144,347.04