Finding the Third Proportional to 21,298,238 and 30,456,730

Step by Step Solution

1. Step 1: Write the proportion equation
   21,298,238 : 30,456,730 = 30,456,730 : x
2. Step 2: Convert to fraction form
   21,298,238/30,456,730 = 30,456,730/x
3. Step 3: Cross multiply
   21,298,238x = 30,456,730 × 30,456,730
4. Step 4: Simplify right side
   21,298,238x = 927,612,402,292,900
5. Step 5: Solve for x
   x = 927,612,402,292,900/21,298,238
6. Step 6: Final answer
   x = 43,553,480.92