Finding the Third Proportional to 17,920,985 and 39,325,617.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,920,985 : 39,325,617.50 = 39,325,617.50 : x
2. Step 2: Convert to fraction form
   17,920,985/39,325,617.50 = 39,325,617.50/x
3. Step 3: Cross multiply
   17,920,985x = 39,325,617.50 × 39,325,617.50
4. Step 4: Simplify right side
   17,920,985x = 1,546,504,191,756,306.25
5. Step 5: Solve for x
   x = 1,546,504,191,756,306.25/17,920,985
6. Step 6: Final answer
   x = 86,295,713.75