Finding the Third Proportional to 10,499,578 and 21,837,235

Step by Step Solution

1. Step 1: Write the proportion equation
   10,499,578 : 21,837,235 = 21,837,235 : x
2. Step 2: Convert to fraction form
   10,499,578/21,837,235 = 21,837,235/x
3. Step 3: Cross multiply
   10,499,578x = 21,837,235 × 21,837,235
4. Step 4: Simplify right side
   10,499,578x = 476,864,832,445,225
5. Step 5: Solve for x
   x = 476,864,832,445,225/10,499,578
6. Step 6: Final answer
   x = 45,417,523.68