Finding the Third Proportional to 76,561,434 and 168,003,108

Step by Step Solution

1. Step 1: Write the proportion equation
   76,561,434 : 168,003,108 = 168,003,108 : x
2. Step 2: Convert to fraction form
   76,561,434/168,003,108 = 168,003,108/x
3. Step 3: Cross multiply
   76,561,434x = 168,003,108 × 168,003,108
4. Step 4: Simplify right side
   76,561,434x = 28,225,044,297,659,664
5. Step 5: Solve for x
   x = 28,225,044,297,659,664/76,561,434
6. Step 6: Final answer
   x = 368,658,772.74