Finding the Third Proportional to 89,731,680 and 194,777,648

Step by Step Solution

1. Step 1: Write the proportion equation
   89,731,680 : 194,777,648 = 194,777,648 : x
2. Step 2: Convert to fraction form
   89,731,680/194,777,648 = 194,777,648/x
3. Step 3: Cross multiply
   89,731,680x = 194,777,648 × 194,777,648
4. Step 4: Simplify right side
   89,731,680x = 37,938,332,160,411,904
5. Step 5: Solve for x
   x = 37,938,332,160,411,904/89,731,680
6. Step 6: Final answer
   x = 422,797,524.36