Finding the Third Proportional to 450,117 and 636,889.50

Step by Step Solution

1. Step 1: Write the proportion equation
   450,117 : 636,889.50 = 636,889.50 : x
2. Step 2: Convert to fraction form
   450,117/636,889.50 = 636,889.50/x
3. Step 3: Cross multiply
   450,117x = 636,889.50 × 636,889.50
4. Step 4: Simplify right side
   450,117x = 405,628,235,210.25
5. Step 5: Solve for x
   x = 405,628,235,210.25/450,117
6. Step 6: Final answer
   x = 901,161.78