Finding the Third Proportional to 30,858,766 and 42,031,078

Step by Step Solution

1. Step 1: Write the proportion equation
   30,858,766 : 42,031,078 = 42,031,078 : x
2. Step 2: Convert to fraction form
   30,858,766/42,031,078 = 42,031,078/x
3. Step 3: Cross multiply
   30,858,766x = 42,031,078 × 42,031,078
4. Step 4: Simplify right side
   30,858,766x = 1,766,611,517,842,084
5. Step 5: Solve for x
   x = 1,766,611,517,842,084/30,858,766
6. Step 6: Final answer
   x = 57,248,287.82