Finding the Third Proportional to 72,179,212 and 170,335,613.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,179,212 : 170,335,613.50 = 170,335,613.50 : x
2. Step 2: Convert to fraction form
   72,179,212/170,335,613.50 = 170,335,613.50/x
3. Step 3: Cross multiply
   72,179,212x = 170,335,613.50 × 170,335,613.50
4. Step 4: Simplify right side
   72,179,212x = 29,014,221,226,421,384
5. Step 5: Solve for x
   x = 29,014,221,226,421,384/72,179,212
6. Step 6: Final answer
   x = 401,974,757.31