Finding the Third Proportional to 384,923,042 and 556,147,443

Step by Step Solution

1. Step 1: Write the proportion equation
   384,923,042 : 556,147,443 = 556,147,443 : x
2. Step 2: Convert to fraction form
   384,923,042/556,147,443 = 556,147,443/x
3. Step 3: Cross multiply
   384,923,042x = 556,147,443 × 556,147,443
4. Step 4: Simplify right side
   384,923,042x = 309,299,978,355,438,272
5. Step 5: Solve for x
   x = 309,299,978,355,438,272/384,923,042
6. Step 6: Final answer
   x = 803,537,186.94