Finding the Third Proportional to 142,911 and 304,799.63

Step by Step Solution

1. Step 1: Write the proportion equation
   142,911 : 304,799.63 = 304,799.63 : x
2. Step 2: Convert to fraction form
   142,911/304,799.63 = 304,799.63/x
3. Step 3: Cross multiply
   142,911x = 304,799.63 × 304,799.63
4. Step 4: Simplify right side
   142,911x = 92,902,811,400.14
5. Step 5: Solve for x
   x = 92,902,811,400.14/142,911
6. Step 6: Final answer
   x = 650,074.60