Finding the Third Proportional to 186,822 and 290,076

Step by Step Solution

1. Step 1: Write the proportion equation
   186,822 : 290,076 = 290,076 : x
2. Step 2: Convert to fraction form
   186,822/290,076 = 290,076/x
3. Step 3: Cross multiply
   186,822x = 290,076 × 290,076
4. Step 4: Simplify right side
   186,822x = 84,144,085,776
5. Step 5: Solve for x
   x = 84,144,085,776/186,822
6. Step 6: Final answer
   x = 450,397.09