Finding the Third Proportional to 212,123,341.50 and 456,665,664

Step by Step Solution

1. Step 1: Write the proportion equation
   212,123,341.50 : 456,665,664 = 456,665,664 : x
2. Step 2: Convert to fraction form
   212,123,341.50/456,665,664 = 456,665,664/x
3. Step 3: Cross multiply
   212,123,341.50x = 456,665,664 × 456,665,664
4. Step 4: Simplify right side
   212,123,341.50x = 208,543,528,676,560,896
5. Step 5: Solve for x
   x = 208,543,528,676,560,896/212,123,341.50
6. Step 6: Final answer
   x = 983,123,908.96