Finding the Third Proportional to 4,557,128 and 9,834,784

Step by Step Solution

1. Step 1: Write the proportion equation
   4,557,128 : 9,834,784 = 9,834,784 : x
2. Step 2: Convert to fraction form
   4,557,128/9,834,784 = 9,834,784/x
3. Step 3: Cross multiply
   4,557,128x = 9,834,784 × 9,834,784
4. Step 4: Simplify right side
   4,557,128x = 96,722,976,326,656
5. Step 5: Solve for x
   x = 96,722,976,326,656/4,557,128
6. Step 6: Final answer
   x = 21,224,546.76