Finding the Third Proportional to 453,970.13 and 636,228

Step by Step Solution

1. Step 1: Write the proportion equation
   453,970.13 : 636,228 = 636,228 : x
2. Step 2: Convert to fraction form
   453,970.13/636,228 = 636,228/x
3. Step 3: Cross multiply
   453,970.13x = 636,228 × 636,228
4. Step 4: Simplify right side
   453,970.13x = 404,786,067,984
5. Step 5: Solve for x
   x = 404,786,067,984/453,970.13
6. Step 6: Final answer
   x = 891,657.94