Finding the Third Proportional to 726,154,123.50 and 1,089,974,778.75

Step by Step Solution

1. Step 1: Write the proportion equation
   726,154,123.50 : 1,089,974,778.75 = 1,089,974,778.75 : x
2. Step 2: Convert to fraction form
   726,154,123.50/1,089,974,778.75 = 1,089,974,778.75/x
3. Step 3: Cross multiply
   726,154,123.50x = 1,089,974,778.75 × 1,089,974,778.75
4. Step 4: Simplify right side
   726,154,123.50x = 1,188,045,018,311,111,424
5. Step 5: Solve for x
   x = 1,188,045,018,311,111,424/726,154,123.50
6. Step 6: Final answer
   x = 1,636,078,319.83