Finding the Third Proportional to 91,892,019 and 142,268,980.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,892,019 : 142,268,980.50 = 142,268,980.50 : x
2. Step 2: Convert to fraction form
   91,892,019/142,268,980.50 = 142,268,980.50/x
3. Step 3: Cross multiply
   91,892,019x = 142,268,980.50 × 142,268,980.50
4. Step 4: Simplify right side
   91,892,019x = 20,240,462,812,509,380
5. Step 5: Solve for x
   x = 20,240,462,812,509,380/91,892,019
6. Step 6: Final answer
   x = 220,263,555.34