Finding the Third Proportional to 286,212 and 453,100.50

Step by Step Solution

1. Step 1: Write the proportion equation
   286,212 : 453,100.50 = 453,100.50 : x
2. Step 2: Convert to fraction form
   286,212/453,100.50 = 453,100.50/x
3. Step 3: Cross multiply
   286,212x = 453,100.50 × 453,100.50
4. Step 4: Simplify right side
   286,212x = 205,300,063,100.25
5. Step 5: Solve for x
   x = 205,300,063,100.25/286,212
6. Step 6: Final answer
   x = 717,300.68