Finding the Third Proportional to 20,729,310 and 42,786,360

Step by Step Solution

1. Step 1: Write the proportion equation
   20,729,310 : 42,786,360 = 42,786,360 : x
2. Step 2: Convert to fraction form
   20,729,310/42,786,360 = 42,786,360/x
3. Step 3: Cross multiply
   20,729,310x = 42,786,360 × 42,786,360
4. Step 4: Simplify right side
   20,729,310x = 1,830,672,602,049,600
5. Step 5: Solve for x
   x = 1,830,672,602,049,600/20,729,310
6. Step 6: Final answer
   x = 88,313,243.52