Finding the Third Proportional to 503,082,817.50 and 799,974,506.25

Step by Step Solution

1. Step 1: Write the proportion equation
   503,082,817.50 : 799,974,506.25 = 799,974,506.25 : x
2. Step 2: Convert to fraction form
   503,082,817.50/799,974,506.25 = 799,974,506.25/x
3. Step 3: Cross multiply
   503,082,817.50x = 799,974,506.25 × 799,974,506.25
4. Step 4: Simplify right side
   503,082,817.50x = 639,959,210,649,931,264
5. Step 5: Solve for x
   x = 639,959,210,649,931,264/503,082,817.50
6. Step 6: Final answer
   x = 1,272,075,269.50