Finding the Third Proportional to 188,526 and 390,180

Step by Step Solution

1. Step 1: Write the proportion equation
   188,526 : 390,180 = 390,180 : x
2. Step 2: Convert to fraction form
   188,526/390,180 = 390,180/x
3. Step 3: Cross multiply
   188,526x = 390,180 × 390,180
4. Step 4: Simplify right side
   188,526x = 152,240,432,400
5. Step 5: Solve for x
   x = 152,240,432,400/188,526
6. Step 6: Final answer
   x = 807,530.17