Finding the Third Proportional to 155,488,921.50 and 340,263,123

Step by Step Solution

1. Step 1: Write the proportion equation
   155,488,921.50 : 340,263,123 = 340,263,123 : x
2. Step 2: Convert to fraction form
   155,488,921.50/340,263,123 = 340,263,123/x
3. Step 3: Cross multiply
   155,488,921.50x = 340,263,123 × 340,263,123
4. Step 4: Simplify right side
   155,488,921.50x = 115,778,992,873,713,136
5. Step 5: Solve for x
   x = 115,778,992,873,713,136/155,488,921.50
6. Step 6: Final answer
   x = 744,612,489.15