Finding the Third Proportional to 4,139,574 and 9,048,648

Step by Step Solution

1. Step 1: Write the proportion equation
   4,139,574 : 9,048,648 = 9,048,648 : x
2. Step 2: Convert to fraction form
   4,139,574/9,048,648 = 9,048,648/x
3. Step 3: Cross multiply
   4,139,574x = 9,048,648 × 9,048,648
4. Step 4: Simplify right side
   4,139,574x = 81,878,030,627,904
5. Step 5: Solve for x
   x = 81,878,030,627,904/4,139,574
6. Step 6: Final answer
   x = 19,779,337.35