Finding the Third Proportional to 719,687,518.59 and 1,105,720,330.78

Step by Step Solution

1. Step 1: Write the proportion equation
   719,687,518.59 : 1,105,720,330.78 = 1,105,720,330.78 : x
2. Step 2: Convert to fraction form
   719,687,518.59/1,105,720,330.78 = 1,105,720,330.78/x
3. Step 3: Cross multiply
   719,687,518.59x = 1,105,720,330.78 × 1,105,720,330.78
4. Step 4: Simplify right side
   719,687,518.59x = 1,222,617,449,902,886,144
5. Step 5: Solve for x
   x = 1,222,617,449,902,886,144/719,687,518.59
6. Step 6: Final answer
   x = 1,698,817,081.46