Finding the Third Proportional to 72,175,602 and 168,415,556

Step by Step Solution

1. Step 1: Write the proportion equation
   72,175,602 : 168,415,556 = 168,415,556 : x
2. Step 2: Convert to fraction form
   72,175,602/168,415,556 = 168,415,556/x
3. Step 3: Cross multiply
   72,175,602x = 168,415,556 × 168,415,556
4. Step 4: Simplify right side
   72,175,602x = 28,363,799,502,789,136
5. Step 5: Solve for x
   x = 28,363,799,502,789,136/72,175,602
6. Step 6: Final answer
   x = 392,983,206.47