Finding the Third Proportional to 152,994 and 220,354

Step by Step Solution

1. Step 1: Write the proportion equation
   152,994 : 220,354 = 220,354 : x
2. Step 2: Convert to fraction form
   152,994/220,354 = 220,354/x
3. Step 3: Cross multiply
   152,994x = 220,354 × 220,354
4. Step 4: Simplify right side
   152,994x = 48,555,885,316
5. Step 5: Solve for x
   x = 48,555,885,316/152,994
6. Step 6: Final answer
   x = 317,371.17