Finding the Third Proportional to 79,388,172 and 170,263,021.50

Step by Step Solution

1. Step 1: Write the proportion equation
   79,388,172 : 170,263,021.50 = 170,263,021.50 : x
2. Step 2: Convert to fraction form
   79,388,172/170,263,021.50 = 170,263,021.50/x
3. Step 3: Cross multiply
   79,388,172x = 170,263,021.50 × 170,263,021.50
4. Step 4: Simplify right side
   79,388,172x = 28,989,496,490,309,464
5. Step 5: Solve for x
   x = 28,989,496,490,309,464/79,388,172
6. Step 6: Final answer
   x = 365,161,405.79