Finding the Third Proportional to 20,042,120 and 42,918,589

Step by Step Solution

1. Step 1: Write the proportion equation
   20,042,120 : 42,918,589 = 42,918,589 : x
2. Step 2: Convert to fraction form
   20,042,120/42,918,589 = 42,918,589/x
3. Step 3: Cross multiply
   20,042,120x = 42,918,589 × 42,918,589
4. Step 4: Simplify right side
   20,042,120x = 1,842,005,281,750,921
5. Step 5: Solve for x
   x = 1,842,005,281,750,921/20,042,120
6. Step 6: Final answer
   x = 91,906,708.56