Finding the Third Proportional to 179,075,990 and 389,680,164

Step by Step Solution

1. Step 1: Write the proportion equation
   179,075,990 : 389,680,164 = 389,680,164 : x
2. Step 2: Convert to fraction form
   179,075,990/389,680,164 = 389,680,164/x
3. Step 3: Cross multiply
   179,075,990x = 389,680,164 × 389,680,164
4. Step 4: Simplify right side
   179,075,990x = 151,850,630,215,066,880
5. Step 5: Solve for x
   x = 151,850,630,215,066,880/179,075,990
6. Step 6: Final answer
   x = 847,967,559.55