Finding the Third Proportional to 76,561,690 and 168,003,608

Step by Step Solution

1. Step 1: Write the proportion equation
   76,561,690 : 168,003,608 = 168,003,608 : x
2. Step 2: Convert to fraction form
   76,561,690/168,003,608 = 168,003,608/x
3. Step 3: Cross multiply
   76,561,690x = 168,003,608 × 168,003,608
4. Step 4: Simplify right side
   76,561,690x = 28,225,212,301,017,664
5. Step 5: Solve for x
   x = 28,225,212,301,017,664/76,561,690
6. Step 6: Final answer
   x = 368,659,734.41