Finding the Third Proportional to 20,731,828 and 42,788,488

Step by Step Solution

1. Step 1: Write the proportion equation
   20,731,828 : 42,788,488 = 42,788,488 : x
2. Step 2: Convert to fraction form
   20,731,828/42,788,488 = 42,788,488/x
3. Step 3: Cross multiply
   20,731,828x = 42,788,488 × 42,788,488
4. Step 4: Simplify right side
   20,731,828x = 1,830,854,705,326,144
5. Step 5: Solve for x
   x = 1,830,854,705,326,144/20,731,828
6. Step 6: Final answer
   x = 88,311,301.12