Finding the Third Proportional to 9,046,128 and 19,662,816

Step by Step Solution

1. Step 1: Write the proportion equation
   9,046,128 : 19,662,816 = 19,662,816 : x
2. Step 2: Convert to fraction form
   9,046,128/19,662,816 = 19,662,816/x
3. Step 3: Cross multiply
   9,046,128x = 19,662,816 × 19,662,816
4. Step 4: Simplify right side
   9,046,128x = 386,626,333,049,856
5. Step 5: Solve for x
   x = 386,626,333,049,856/9,046,128
6. Step 6: Final answer
   x = 42,739,427.64