Finding the Third Proportional to 196,332,156 and 427,139,640

Step by Step Solution

1. Step 1: Write the proportion equation
   196,332,156 : 427,139,640 = 427,139,640 : x
2. Step 2: Convert to fraction form
   196,332,156/427,139,640 = 427,139,640/x
3. Step 3: Cross multiply
   196,332,156x = 427,139,640 × 427,139,640
4. Step 4: Simplify right side
   196,332,156x = 182,448,272,059,329,600
5. Step 5: Solve for x
   x = 182,448,272,059,329,600/196,332,156
6. Step 6: Final answer
   x = 929,283,698.49