Finding the Third Proportional to 545,386.50 and 1,189,903.50

Step by Step Solution

1. Step 1: Write the proportion equation
   545,386.50 : 1,189,903.50 = 1,189,903.50 : x
2. Step 2: Convert to fraction form
   545,386.50/1,189,903.50 = 1,189,903.50/x
3. Step 3: Cross multiply
   545,386.50x = 1,189,903.50 × 1,189,903.50
4. Step 4: Simplify right side
   545,386.50x = 1,415,870,339,312.25
5. Step 5: Solve for x
   x = 1,415,870,339,312.25/545,386.50
6. Step 6: Final answer
   x = 2,596,086.15