Finding the Third Proportional to 287,577 and 604,897.50

Step by Step Solution

1. Step 1: Write the proportion equation
   287,577 : 604,897.50 = 604,897.50 : x
2. Step 2: Convert to fraction form
   287,577/604,897.50 = 604,897.50/x
3. Step 3: Cross multiply
   287,577x = 604,897.50 × 604,897.50
4. Step 4: Simplify right side
   287,577x = 365,900,985,506.25
5. Step 5: Solve for x
   x = 365,900,985,506.25/287,577
6. Step 6: Final answer
   x = 1,272,358.31