Finding the Third Proportional to 39,994 and 87,499

Step by Step Solution

1. Step 1: Write the proportion equation
   39,994 : 87,499 = 87,499 : x
2. Step 2: Convert to fraction form
   39,994/87,499 = 87,499/x
3. Step 3: Cross multiply
   39,994x = 87,499 × 87,499
4. Step 4: Simplify right side
   39,994x = 7,656,075,001
5. Step 5: Solve for x
   x = 7,656,075,001/39,994
6. Step 6: Final answer
   x = 191,430.59