Finding the Third Proportional to 91,920,930.50 and 196,955,570

Step by Step Solution

1. Step 1: Write the proportion equation
   91,920,930.50 : 196,955,570 = 196,955,570 : x
2. Step 2: Convert to fraction form
   91,920,930.50/196,955,570 = 196,955,570/x
3. Step 3: Cross multiply
   91,920,930.50x = 196,955,570 × 196,955,570
4. Step 4: Simplify right side
   91,920,930.50x = 38,791,496,554,024,896
5. Step 5: Solve for x
   x = 38,791,496,554,024,896/91,920,930.50
6. Step 6: Final answer
   x = 422,009,398.11