Finding the Third Proportional to 286,632 and 429,897.38

Step by Step Solution

1. Step 1: Write the proportion equation
   286,632 : 429,897.38 = 429,897.38 : x
2. Step 2: Convert to fraction form
   286,632/429,897.38 = 429,897.38/x
3. Step 3: Cross multiply
   286,632x = 429,897.38 × 429,897.38
4. Step 4: Simplify right side
   286,632x = 184,811,753,031.89
5. Step 5: Solve for x
   x = 184,811,753,031.89/286,632
6. Step 6: Final answer
   x = 644,770.13