Finding the Third Proportional to 537,423 and 803,326.50

Step by Step Solution

1. Step 1: Write the proportion equation
   537,423 : 803,326.50 = 803,326.50 : x
2. Step 2: Convert to fraction form
   537,423/803,326.50 = 803,326.50/x
3. Step 3: Cross multiply
   537,423x = 803,326.50 × 803,326.50
4. Step 4: Simplify right side
   537,423x = 645,333,465,602.25
5. Step 5: Solve for x
   x = 645,333,465,602.25/537,423
6. Step 6: Final answer
   x = 1,200,792.42