Finding the Third Proportional to 287,712 and 626,008.50

Step by Step Solution

1. Step 1: Write the proportion equation
   287,712 : 626,008.50 = 626,008.50 : x
2. Step 2: Convert to fraction form
   287,712/626,008.50 = 626,008.50/x
3. Step 3: Cross multiply
   287,712x = 626,008.50 × 626,008.50
4. Step 4: Simplify right side
   287,712x = 391,886,642,072.25
5. Step 5: Solve for x
   x = 391,886,642,072.25/287,712
6. Step 6: Final answer
   x = 1,362,079.59