Finding the Third Proportional to 89,538,145 and 194,840,374

Step by Step Solution

1. Step 1: Write the proportion equation
   89,538,145 : 194,840,374 = 194,840,374 : x
2. Step 2: Convert to fraction form
   89,538,145/194,840,374 = 194,840,374/x
3. Step 3: Cross multiply
   89,538,145x = 194,840,374 × 194,840,374
4. Step 4: Simplify right side
   89,538,145x = 37,962,771,340,459,872
5. Step 5: Solve for x
   x = 37,962,771,340,459,872/89,538,145
6. Step 6: Final answer
   x = 423,984,340.31