Finding the Third Proportional to 91,078,384 and 196,698,880

Step by Step Solution

1. Step 1: Write the proportion equation
   91,078,384 : 196,698,880 = 196,698,880 : x
2. Step 2: Convert to fraction form
   91,078,384/196,698,880 = 196,698,880/x
3. Step 3: Cross multiply
   91,078,384x = 196,698,880 × 196,698,880
4. Step 4: Simplify right side
   91,078,384x = 38,690,449,393,254,400
5. Step 5: Solve for x
   x = 38,690,449,393,254,400/91,078,384
6. Step 6: Final answer
   x = 424,803,863.38