Finding the Third Proportional to 79,666,380 and 171,439,666

Step by Step Solution

1. Step 1: Write the proportion equation
   79,666,380 : 171,439,666 = 171,439,666 : x
2. Step 2: Convert to fraction form
   79,666,380/171,439,666 = 171,439,666/x
3. Step 3: Cross multiply
   79,666,380x = 171,439,666 × 171,439,666
4. Step 4: Simplify right side
   79,666,380x = 29,391,559,078,191,556
5. Step 5: Solve for x
   x = 29,391,559,078,191,556/79,666,380
6. Step 6: Final answer
   x = 368,933,031.45