Finding the Third Proportional to 196,817,809.50 and 422,843,912.72

Step by Step Solution

1. Step 1: Write the proportion equation
   196,817,809.50 : 422,843,912.72 = 422,843,912.72 : x
2. Step 2: Convert to fraction form
   196,817,809.50/422,843,912.72 = 422,843,912.72/x
3. Step 3: Cross multiply
   196,817,809.50x = 422,843,912.72 × 422,843,912.72
4. Step 4: Simplify right side
   196,817,809.50x = 178,796,974,523,301,856
5. Step 5: Solve for x
   x = 178,796,974,523,301,856/196,817,809.50
6. Step 6: Final answer
   x = 908,439,002.43