Finding the Third Proportional to 858,722,485.50 and 1,869,501,687.75

Step by Step Solution

1. Step 1: Write the proportion equation
   858,722,485.50 : 1,869,501,687.75 = 1,869,501,687.75 : x
2. Step 2: Convert to fraction form
   858,722,485.50/1,869,501,687.75 = 1,869,501,687.75/x
3. Step 3: Cross multiply
   858,722,485.50x = 1,869,501,687.75 × 1,869,501,687.75
4. Step 4: Simplify right side
   858,722,485.50x = 3,495,036,560,500,098,560
5. Step 5: Solve for x
   x = 3,495,036,560,500,098,560/858,722,485.50
6. Step 6: Final answer
   x = 4,070,041,974.58