Finding the Third Proportional to 91,623,852 and 196,363,380

Step by Step Solution

1. Step 1: Write the proportion equation
   91,623,852 : 196,363,380 = 196,363,380 : x
2. Step 2: Convert to fraction form
   91,623,852/196,363,380 = 196,363,380/x
3. Step 3: Cross multiply
   91,623,852x = 196,363,380 × 196,363,380
4. Step 4: Simplify right side
   91,623,852x = 38,558,577,005,024,400
5. Step 5: Solve for x
   x = 38,558,577,005,024,400/91,623,852
6. Step 6: Final answer
   x = 420,835,581.17