Finding the Third Proportional to 1,266,076,991 and 1,912,345,459.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,266,076,991 : 1,912,345,459.50 = 1,912,345,459.50 : x
2. Step 2: Convert to fraction form
   1,266,076,991/1,912,345,459.50 = 1,912,345,459.50/x
3. Step 3: Cross multiply
   1,266,076,991x = 1,912,345,459.50 × 1,912,345,459.50
4. Step 4: Simplify right side
   1,266,076,991x = 3,657,065,156,470,266,368
5. Step 5: Solve for x
   x = 3,657,065,156,470,266,368/1,266,076,991
6. Step 6: Final answer
   x = 2,888,501,396.41