Finding the Third Proportional to 20,824,768 and 42,664,300

Step by Step Solution

1. Step 1: Write the proportion equation
   20,824,768 : 42,664,300 = 42,664,300 : x
2. Step 2: Convert to fraction form
   20,824,768/42,664,300 = 42,664,300/x
3. Step 3: Cross multiply
   20,824,768x = 42,664,300 × 42,664,300
4. Step 4: Simplify right side
   20,824,768x = 1,820,242,494,490,000
5. Step 5: Solve for x
   x = 1,820,242,494,490,000/20,824,768
6. Step 6: Final answer
   x = 87,407,576.14